FNUS73 KDMX 121041
FWSDMX

SPOT FORECAST FOR BISON SOUTH PATCH H  I...USFWS
NATIONAL WEATHER SERVICE DES MOINES IA
541 AM CDT TUE APR 12 2011

FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

PLEASE REMEMBER TO SUBMIT A MID BURN OBSERVATION TO THE NATIONAL WEATHER
SERVICE FOR EACH PRESCRIBED BURN.

.DISCUSSION...
HIGH PRESSURE OVER IOWA THIS MORNING WILL MOVE EAST AND PASS INTO
ILLINOIS BY THIS AFTERNOON.  LIGHT AND VARIABLE WINDS WILL BECOME
SOUTHERLY AND GRADUALLY INCREASE BY MIDDAY.  RELATIVE HUMIDITIES
WILL FALL QUICKLY THROUGH THE DAY AS THE DRY AIR HEATS QUICKLY.

.TODAY...

SKY/WEATHER.........SUNNY (5-15 PERCENT).
TEMPERATURE.........54 AT IGNITION...MAX 70.
RH..................48 PERCENT AT IGNITION...MIN 29 PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1100 FT AGL INCREASING TO 5700 FT AGL.
MIXING WINDS........SOUTH 2 TO 10 MPH INCREASING TO AROUND 12 MPH
                    LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....GOOD (53500 KNOT-FT).
WIND (20 FT)........WINDS WEST AT 5 MPH AT IGNITION...OTHERWISE
                    LIGHT WINDS BECOMING SOUTH 5 TO 7 MPH IN THE
                    LATE MORNING AND AFTERNOON.

TIME (CDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM
SKY (%).........7   9   10  10  11  13  15  16  18
WEATHER COV.....
WEATHER TYPE....
TEMP............54  58  61  64  66  68  69  68  67
RH..............48  42  36  32  32  29  30  31  32
20 FT WIND DIR..W   SW  SW  SW  SW  S   S   S   S
20 FT WIND SPD..5   5   6   6   6   7   7   7   7
20 FT WIND GUST.
MIX HGT (KFT)...1.1 2.5 3.8 5.1 5.3 5.5 5.7 5.4 5.1
MIXNG WIND DIR..W   SW  S   S   S   S   S   S   S
MIXNG WIND SPD..2   2   3   5   7   8   10  12  12
HAINES INDEX....5   5   6   6   5   5   4   4   5

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
TEMPERATURE.........MIN 46.
RH..................MAX 77 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4900 FT AGL DECREASING TO 1800 FT AGL EARLY IN
                    THE EVENING.
MIXING WINDS........SOUTHEAST 6 TO 12 MPH.
SMOKE DISPERSAL.....FAIR (48700 KNOT-FT).
WIND (20 FT)........SOUTH WINDS 6 TO 8 MPH.

TIME (CDT)      7 PM      10 PM     1 AM      4 AM
SKY (%).........19        30        41        44
WEATHER COV.....
WEATHER TYPE....NONE      NONE      NONE      NONE
TEMP............66        58        54        50
RH..............33        47        61        71
20 FT WIND......S 7       S 7       S 6       S 7
MIX HGT (FT)....4900      300       300       300
MIXNG WIND......S 12      SE 8      S 6       SE 7
HAINES INDEX....5         5         5         5

$$
FORECASTER...COGIL
REQUESTED BY...JAMES KRIZMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 20110412.BISON.01/DMX